Get Soft, Pink Lips With This Easy Homemade Scrub Every woman likes to have rosy and pink lips. Pinkish lips enhance your beauty. In this article you will find 9 best natural home remedies to lighten dark lips.Sometimes darker lips are genetically inherited and are most commonly found in dark complexioned people. However, lifestyle is also a huge contributory factor in having darker lips. There are several factors that can cause your lips to get darker. The most common causes for darker lips are exposure to sun, UV rays, smoking, allergies, too much caffeine intake, hormonal imbalances and age.